package com.ljp.spring_boot.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;

import javax.sql.DataSource;

@Configuration
public class DruidConfiguration {
    @Bean(destroyMethod = "close", initMethod = "init")
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource druidDataSource() {
        return new DruidDataSource();
    }

  /**
   * 注册一个StatViewServlet
   *
   * @return
   */
  @Bean
  public ServletRegistrationBean druidStatViewServlet() {
      //org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册.
      ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");

      //添加初始化参数：initParams
      //白名单：
      servletRegistrationBean.addInitParameter("allow", "127.0.0.1");
      //IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page.
//        servletRegistrationBean.addInitParameter("deny", "192.168.1.73");
      //登录查看信息的账号密码.
      servletRegistrationBean.addInitParameter("loginUsername", "admin");
      servletRegistrationBean.addInitParameter("loginPassword", "123456");
      //是否能够重置数据.
      servletRegistrationBean.addInitParameter("resetEnable", "false");
      return servletRegistrationBean;
  }

  /**
   * 注册一个：filterRegistrationBean
   *
   * @return
   */
  @Bean
  public FilterRegistrationBean druidStatFilter() {

      FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());

      //添加过滤规则.
      filterRegistrationBean.addUrlPatterns("/*");

      //添加不需要忽略的格式信息.
      filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
      return filterRegistrationBean;
  }
}
